Infectious Diseases Test Revision

A pandemic

• occurs at a constant rate within the population

• affects a large number of people but restricted to one area

• is smaller than an epidemic

• is an infectious global outbreak that affects large numbers of people.

Bacterial Brucellosis symptoms include profuse sweating & joint & muscle pain. The incubation period is generally 1-2 months. What occurs during the incubation period?

• The bacterium is travelling throughout the body trying to find suitable host cells

• The bacteria is dominant

• The bacterium is multiplying before reaching colony numbers sufficient to cause symptoms

• The immune system is fighting the bacterium & winning

Which of the following is NOT true of viruses?

• They are highly specific & always pathogenic

• They replicate as they circulate in the bloodstream

• They are not considered to be living as they can't function outside the host cell

• They consist of a core containing nucleic acid plus a protein coat

A distinguishing structural characteristic of multicellular fungi is

• a membrane bound nucleus

• the capacity to secrete digestive enzymes

• a cellulose cell wall

• branching hypha

The capacity of a disease to cause a severe disease within its host is referred to as its

• infectivity

• virulence

• outbreak

• pandemic

An intermediate host which carries a pathogen that causes a disease from one organism to another is a(n)

• antibiotic

• zoosporangium

• endemic species

• vector

Which procedure would be the most effective in preventing the spread of the Phythopthera fungus into an uninfected population of trees?

• Prevent the importation of those trees into WA

• Export those trees overseas

• Quarantine the trees being imported into Australia

• Wash all soil from visitors shoes before the enter the unaffected population area

Which lifecycle stage of the Plasmodium sp. is found inside the salivary glands of mosquitos?

• Gametocytes

• Merozoites

• Sporozoites

• Trophozoites

Tuberculosis is a __________ pathogen that affects __________

• bacterial, humans

• virus, insects

• fungi, eucalyptus

• bacterial, ants

Antibiotics are ineffective at treating viral infections because

• viruses can only be controlled by vaccinations

• viruses do not contain genetic material

• viruses mutate too quickly for antibiotics to be effective

• antibiotics target cellular processes that occur within cellular structures not present in viruses